The main difference in this release
(https://github.com/SystemRDL/systemrdl-compiler/releases/tag/v1.19.0)
is that FieldNode.get_property('resetsignal') will now default to
finding the nearest in-scope field reset signal if not explicitly set.
The same is true for the cpuif-signal.
Before this commit, the addmap-class searched for resetsignal and cpuif
signals and saved it for the fields to be picked up later. This code is
now not required anymore